Telemark Asset Management LLC 13D and 13G filings for Aspen Aerogels, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2023-02-03 3:28 pm Unchanged | 2022-12-31 | 13G | Aspen Aerogels, Inc. ASPN | Telemark Asset Management LLC | 1,970,000 2.980% | 0 (Unchanged) | Filing |
| 2023-02-03 10:59 am Purchase | 2022-12-31 | 13G | Aspen Aerogels, Inc. ASPN | Telemark Asset Management LLC | 1,970,000 2.980% | 130,000 (+7.07%) | Filing |
| 2022-01-28 2:34 pm Sale | 2021-12-31 | 13G | Aspen Aerogels, Inc. ASPN | Telemark Asset Management LLC | 1,840,000 5.560% | -410,000 (-18.22%) | Filing |
| 2021-02-12 3:33 pm Purchase | 2020-12-31 | 13G | Aspen Aerogels, Inc. ASPN | Telemark Asset Management LLC | 2,250,000 8.300% | 524,689 (+30.41%) | Filing |